package com.feature.learn.proxy;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

class DynamicProxyHandler implements InvocationHandler {

	private Object proxied;

	public DynamicProxyHandler(Object proxied) {
		this.proxied = proxied;
	}

	@Override
	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
		System.out.println("***** proxy: " + proxy.getClass() + ", method: " + method + ", args: " + args);
		if (args != null) {
			for (Object arg : args) {
				System.out.println("   " + arg);
			}
		}
		return method.invoke(proxied, args);
	}
}

public class SimpleDynamicProxy {
	public static void consumer(Interface iface) {
		iface.doSomething();
		iface.somethingElse("test");
	}

	public static void main(String[] args) {
		RealObject realObject = new RealObject();
		consumer(realObject);
		DynamicProxyHandler dynamicProxyHandler = new DynamicProxyHandler(realObject);
		Interface proxy = (Interface)Proxy.newProxyInstance(Interface.class.getClassLoader(), new Class[]{Interface.class},
				dynamicProxyHandler);
		consumer(proxy);

	}
}
